- 
new headahce in any patient over 50yo raise suspicion 
- 
headache often but not alwasy 
- 
likely to be persistent 
- 
often worse at night 
- 
only minority of cases localised to temples 
- 
jaw claudication so suggestive - gca until proved otherwsei 
- 
marked scalp tenderness common 
- 
most have esr >50